GIAC Stage 2 dyno graph

tscdennab · 12-21-2010, 10:14 AM

UPDATE: After re-dynoing with Injen intake, I obtained an extra 11whp, making it a 74whp delta (graph below). 27 more to go...

Today I went to the dyno and did some runs. It's a Mustang dyno.

Mods:

- Stock airbox with Helene drop-in filter
- 2.5" catless downpipes
- Wagner intercooler

The outside temperature was about 3-4 degrees Celsius. Maximum boost was 15.7psi. The AFR after 3500RPM was between 11 and 10.7. The uncorrected power level was about 330whp (264whp stock). The corrected power level was 316whp (253whp stock).

I obtained a delta of 63whp. However, GIAC advertises a delta of 100whp. One question is, can a DCI and a removed secondary cat recover this difference ? I for one do not think so. But I installed the Injen intake after the dyno...I hope to re-dyno very soon to see if I get any additional power.

Feel free to comment...

Iwantm3 · 12-21-2010, 10:21 AM

stock air box needs to be replaced, secondary cats too but not by much.

99three · 12-21-2010, 11:04 AM

DCI, 3" DP and ff exhaust will help.

piele_bps · 12-21-2010, 11:43 AM

Very nice power curve. So smooth.
But the torque curve is odd.

lyndon_h · 12-21-2010, 11:55 AM

why is the crossover at 5700?

Mr. 5 · 12-21-2010, 01:03 PM

DCI will be the main contributor of an increase.
Remember that this is a load dyno though.

Quote:

Originally Posted by lyndon_h

why is the crossover at 5700?

Because the numbers on the right of the graph aren't the same as the numbers on the left.

Penn999 · 12-21-2010, 01:08 PM

Quote:

Originally Posted by Mr. 5

DCI will be the main contributor of an increase.
Remember that this is a load dyno though.

Because the numbers on the right of the graph aren't the same as the numbers on the left.

normal tq reading are gathered at 5250...right? I agree DCI will help a fair amount. ff exhaust will get you a couple hp, not much. I would get dci first.

M3_WC · 12-21-2010, 01:08 PM

I thought you had to have fully catless or high flow cat exhaust, also you should have a dci to get stage 2.

techlogik · 12-21-2010, 01:10 PM

Well, I got the same numbers Stage 1, see sig. Custom FMIC, drop in filter, had full exhaust at the time...but that was only good for 10whp the FMIC and exhaust. Colder weather I think I can pull a 340-350whp now...of course it is 70F again today..so not going until it is like 40F next time!

I think GIAC says you need Dual Cone, or aftermarket intake, full exhaust and catless DPs along with FMIC to achieve that 100whp delta.

60whp/tq delta is pretty normal for Stage 1.

tscdennab · 12-21-2010, 03:14 PM

Quote:

Originally Posted by techlogik

Well, I got the same numbers Stage 1, see sig. Custom FMIC, drop in filter, had full exhaust at the time...but that was only good for 10whp the FMIC and exhaust. Colder weather I think I can pull a 340-350whp now...of course it is 70F again today..so not going until it is like 40F next time!

I think GIAC says you need Dual Cone, or aftermarket intake, full exhaust and catless DPs along with FMIC to achieve that 100whp delta.

60whp/tq delta is pretty normal for Stage 1.

From my research, I got about 10whp more than the standard Stage 1. I hope the new Injen intake I have installed will bring me about 10 more, I will re-dyno very soon.

Clap135 · 12-21-2010, 03:19 PM

Seems to me like GIAC has to play with the maps a little more. Is 15.8 psi the norm?
For reference I picked up 100whp with a dci/meth/v4 boosting only 1 more psi. Yea the meth helped with timing, but I had zero mods, and it was done on a mustang dyno as well.

vasillalov · 12-21-2010, 03:57 PM

Quote:

Originally Posted by techlogik

I think GIAC says you need Dual Cone, or aftermarket intake, full exhaust and catless DPs along with FMIC to achieve that 100whp delta..

BINGO! You need full boltons for max gains on S2

M3_WC · 12-21-2010, 04:08 PM

Quote:

Originally Posted by vasillalov

BINGO! You need full boltons for max gains on S2

This

sleepergm · 12-21-2010, 07:48 PM

Seems really low ... you should be around 390 to 410 whp

Penn999 · 12-21-2010, 10:04 PM

Quote:

Originally Posted by sleepergm

Seems really low ... you should be around 390 to 410 whp

he wouldnt be quite that high, maybe on race gas with full bolt ons.

Alpina_B3_Lux · 12-22-2010, 03:36 AM

Quote:

Originally Posted by Clap135

Seems to me like GIAC has to play with the maps a little more.

I don't think so. I got a delta of almost precisely 100hp out of the stage 2, without stage 2 race and meth. The difference to the Evotech flash I had before (which was comparable to GIAC stage 1) was very noticeable.

Alpina_B3_Lux

enrita · 12-22-2010, 04:28 AM

I pulled as well around 95 whp delta on stage 2 .

tscdennab · 12-22-2010, 10:12 AM

I am going to dyno again tomorrow, this time with the Injen intake and a bit better gas (101RON instead of 99RON). Let's see if something changes. But I'm not holding my breath, to be honest. I will probably need to do something about my secondary cats and maybe try some 3" downpipes.

I am not sure how many people here dynoed on Mustang dyno.

There is a debate on whether or not 3" downpipes bring a few horses more than the 2.5" ones. Mr. 5's article on this seems very serious. I am curious if there is someone with 2.5" downpipes getting the 100whp extra advertised by GIAC ? I might have to throw out my homemade 2.5" ones in favor of 3" ones...

Daya · 12-22-2010, 10:51 AM

from stock tune with FMIC, AR catted DP, secondary cats in place and bastuck exhaust to GIAC stage 2 with FMIC, AR catted DP, CAI, catless MP and bastuck exhaust I gained 79 whp and 106 wtq

you definitely need full bolt ons to maximize the gains of S2

if not for already having FMIC, AR catted DP and bastuck exhaust on my stock tune dyno run I would definitely have the 100 whp gain from a purely stock baseline

Here is an excerpt from a previous post of mine

http://www.e90post.com/forums/showthread.php?t=448249

"Baseline"
Stock ECU
Bolt on Power Mods: FMIC, DP, Exhaust

"Stage 1"
GIAC S1
Bolt on Power Mods: FMIC, DP, Exhaust
+ 40whp
+ 51wtq

"Stage 2"
GIAC S2
Bolt on Power Mods: FMIC, DP, Exhaust, CAI, MP
+ 39whp
+ 55wtq

Summary - GIAC S2 with the addition of CAI and MP added 79whp and 106wtq.

tscdennab · 12-22-2010, 12:28 PM

Quote:

Originally Posted by Daya

if not for already having FMIC, AR catted DP and bastuck exhaust on my stock tune dyno run I would definitely have the 100 whp gain from a purely stock baseline

GIAC advertises 100whp between stock tune with full mods and Stage 2 with full mods. So you are still short of 20whp

What dyno were you using ?

packinDSS · 12-22-2010, 12:43 PM

A few questions

Are you sure they gave you S2?

What do you mean by "homemade" 2.5 inch downpipes? Clarify what you did. Cat off cats welded peices in etc.....

Clap135 · 12-22-2010, 03:13 PM

So you guys are under the impression that a dci and exhaust is going to give him 30-40 whp?
I was under the impression that GIAC works off load targets and adjust boost to meet those targets.

Did anybody miss the fact that he is hitting 481 wtq? That is a crazy high number.
390wtq on the stock tune? Seems like this dyno is a little messed up to begin with.

12-21-2010, 10:14 AM	#1
tscdennab Banned 151 Rep 1,809 Posts Drives: BMW 335i Join Date: Oct 2010 Location: Europe iTrader: (0) Garage List 2008 BMW [6.24]	GIAC Stage 2 dyno graph - am I missing a few horses ? UPDATE: After re-dynoing with Injen intake, I obtained an extra 11whp, making it a 74whp delta (graph below). 27 more to go... Today I went to the dyno and did some runs. It's a Mustang dyno. Mods: - Stock airbox with Helene drop-in filter - 2.5" catless downpipes - Wagner intercooler The outside temperature was about 3-4 degrees Celsius. Maximum boost was 15.7psi. The AFR after 3500RPM was between 11 and 10.7. The uncorrected power level was about 330whp (264whp stock). The corrected power level was 316whp (253whp stock). I obtained a delta of 63whp. However, GIAC advertises a delta of 100whp. One question is, can a DCI and a removed secondary cat recover this difference ? I for one do not think so. But I installed the Injen intake after the dyno...I hope to re-dyno very soon to see if I get any additional power. Feel free to comment... Attached Images Last edited by tscdennab; 12-23-2010 at 09:12 AM..
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12-21-2010, 10:21 AM	#2
Iwantm3 Banned 34 Rep 1,284 Posts Drives: 335i M sport Join Date: Mar 2009 Location: US AND A I likeeeee iTrader: (1)	stock air box needs to be replaced, secondary cats too but not by much.
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12-21-2010, 11:04 AM	#3
99three Banned 25 Rep 838 Posts Drives: 993, e92, e36, F355, Z32, Jag Join Date: Sep 2010 Location: in the 416 iTrader: (3)	DCI, 3" DP and ff exhaust will help.
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12-21-2010, 11:43 AM	#4
piele_bps Enlisted Member 1 Rep 48 Posts Drives: E90 335i '07 Join Date: Sep 2009 Location: Romania iTrader: (0)	Very nice power curve. So smooth. But the torque curve is odd.
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12-21-2010, 11:55 AM	#5
lyndon_h Lieutenant Colonel 40 Rep 1,917 Posts Drives: e90 Join Date: Jan 2007 Location: Madagascar iTrader: (2)	why is the crossover at 5700?
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12-21-2010, 01:08 PM	#8
M3_WC Brigadier General 1040 Rep 3,622 Posts Drives: M3 Join Date: Jun 2009 Location: CA iTrader: (0)	I thought you had to have fully catless or high flow cat exhaust, also you should have a dci to get stage 2.
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12-21-2010, 01:10 PM	#9
techlogik Lieutenant Colonel 70 Rep 1,565 Posts Drives: 2020 M340i Dravit Grey Join Date: Dec 2006 Location: FL iTrader: (2)	Well, I got the same numbers Stage 1, see sig. Custom FMIC, drop in filter, had full exhaust at the time...but that was only good for 10whp the FMIC and exhaust. Colder weather I think I can pull a 340-350whp now...of course it is 70F again today..so not going until it is like 40F next time! I think GIAC says you need Dual Cone, or aftermarket intake, full exhaust and catless DPs along with FMIC to achieve that 100whp delta. 60whp/tq delta is pretty normal for Stage 1. __________________ 2020 M340i: Dravit Grey Mettalic. Loaded.
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12-21-2010, 03:19 PM	#11
Clap135 Brigadier General 102 Rep 3,460 Posts Drives: 2009 N54 Join Date: Jul 2009 Location: Sticky's Mom House iTrader: (1)	Seems to me like GIAC has to play with the maps a little more. Is 15.8 psi the norm? For reference I picked up 100whp with a dci/meth/v4 boosting only 1 more psi. Yea the meth helped with timing, but I had zero mods, and it was done on a mustang dyno as well.
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12-21-2010, 07:48 PM	#14
sleepergm Lieutenant 36 Rep 541 Posts Drives: White 335i M-Tech Join Date: May 2007 Location: Hong Kong iTrader: (2)	Seems really low ... you should be around 390 to 410 whp
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12-22-2010, 04:28 AM	#17
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	I pulled as well around 95 whp delta on stage 2 . __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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12-22-2010, 10:12 AM	#18
tscdennab Banned 151 Rep 1,809 Posts Drives: BMW 335i Join Date: Oct 2010 Location: Europe iTrader: (0) Garage List 2008 BMW [6.24]	I am going to dyno again tomorrow, this time with the Injen intake and a bit better gas (101RON instead of 99RON). Let's see if something changes. But I'm not holding my breath, to be honest. I will probably need to do something about my secondary cats and maybe try some 3" downpipes. I am not sure how many people here dynoed on Mustang dyno. There is a debate on whether or not 3" downpipes bring a few horses more than the 2.5" ones. Mr. 5's article on this seems very serious. I am curious if there is someone with 2.5" downpipes getting the 100whp extra advertised by GIAC ? I might have to throw out my homemade 2.5" ones in favor of 3" ones...
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12-22-2010, 10:51 AM	#19
Daya Lieutenant Colonel 200 Rep 1,741 Posts Drives: e92 335 space gray/coral red Join Date: Sep 2006 Location: Chicago iTrader: (1) Garage List 2007 E92 335 [9.66]	from stock tune with FMIC, AR catted DP, secondary cats in place and bastuck exhaust to GIAC stage 2 with FMIC, AR catted DP, CAI, catless MP and bastuck exhaust I gained 79 whp and 106 wtq you definitely need full bolt ons to maximize the gains of S2 if not for already having FMIC, AR catted DP and bastuck exhaust on my stock tune dyno run I would definitely have the 100 whp gain from a purely stock baseline Here is an excerpt from a previous post of mine http://www.e90post.com/forums/showthread.php?t=448249 "Baseline" Stock ECU Bolt on Power Mods: FMIC, DP, Exhaust "Stage 1" GIAC S1 Bolt on Power Mods: FMIC, DP, Exhaust + 40whp + 51wtq "Stage 2" GIAC S2 Bolt on Power Mods: FMIC, DP, Exhaust, CAI, MP + 39whp + 55wtq Summary - GIAC S2 with the addition of CAI and MP added 79whp and 106wtq. __________________ GIAC S2 \| Brembo GT BBK 355/345 \| BBS CH-R \| Michelin Pilot Super Sports \| AR Design: DP, S1 Oil Cooler, OCC \| AMS FMIC \| Bastuck Quad Exhaust \| Borla MP \| KW V1 \| Stett: CAI, CP \| Forge DV \| P3 Boost Gauge \| Arkym: Front Lip, Rear Quad Diffuser \| Vorsteiner CSL Trunk \| LUX H8 \| ModMyNav \| MFD M3 Sideskirts \| BMW M-Tech Front/Rear Bumpers, Edition Grills
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12-22-2010, 12:43 PM	#21
packinDSS Lead Foot 18 Rep 409 Posts Drives: 2007 BMW 335i Sedan Join Date: Jun 2009 Location: North Jersey iTrader: (1)	A few questions Are you sure they gave you S2? What do you mean by "homemade" 2.5 inch downpipes? Clarify what you did. Cat off cats welded peices in etc.....
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12-22-2010, 03:13 PM	#22
Clap135 Brigadier General 102 Rep 3,460 Posts Drives: 2009 N54 Join Date: Jul 2009 Location: Sticky's Mom House iTrader: (1)	So you guys are under the impression that a dci and exhaust is going to give him 30-40 whp? I was under the impression that GIAC works off load targets and adjust boost to meet those targets. Did anybody miss the fact that he is hitting 481 wtq? That is a crazy high number. 390wtq on the stock tune? Seems like this dyno is a little messed up to begin with.
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